Very interested ! I have never seen 5 strings on his collection. The bass sounds like Low-B construction. I think Hi-C construction is much better for his style (regular + tenor bass). The scale is short scale that I believe. How about the neck width ? Large finger board inlays ?

The same person has put up some more vids from last night. I just watched Pork Pie Hat, and maybe it's a function of the camera mic or the stage sound or how Stanley has his rig set up, but I think the new bass sounds really nice, a very round, balanced tone.

Interestingly, in this tune near the end of his solo, Stanley is right up in front of the drums, and you can see Stewart suddenly put his stick in the stick bag and then surprisingly reaches up and pulls on the strings on Stanley's bass; and he must have moved the tuning peg as well because Stanley then goes over to tune his bass while the song is still going on.

Like the song linked above, in this one the camera is again focused mostly on Stewart, but then Stewart is fun to watch. He has a nice approach to the music.